Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1#include <linux/kernel.h>
2#include <linux/module.h>
3#include <linux/device.h>
4#include <linux/netdevice.h>
5
6#include "bonding.h"
7#include "bond_alb.h"
8
9#if defined(CONFIG_DEBUG_FS) && !defined(CONFIG_NET_NS)
10
11#include <linux/debugfs.h>
12#include <linux/seq_file.h>
13
14static struct dentry *bonding_debug_root;
15
16/*
17 * Show RLB hash table
18 */
19static int bond_debug_rlb_hash_show(struct seq_file *m, void *v)
20{
21 struct bonding *bond = m->private;
22 struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond));
23 struct rlb_client_info *client_info;
24 u32 hash_index;
25
26 if (bond->params.mode != BOND_MODE_ALB)
27 return 0;
28
29 seq_printf(m, "SourceIP DestinationIP "
30 "Destination MAC DEV\n");
31
32 spin_lock_bh(&(BOND_ALB_INFO(bond).rx_hashtbl_lock));
33
34 hash_index = bond_info->rx_hashtbl_used_head;
35 for (; hash_index != RLB_NULL_INDEX;
36 hash_index = client_info->used_next) {
37 client_info = &(bond_info->rx_hashtbl[hash_index]);
38 seq_printf(m, "%-15pI4 %-15pI4 %-17pM %s\n",
39 &client_info->ip_src,
40 &client_info->ip_dst,
41 &client_info->mac_dst,
42 client_info->slave->dev->name);
43 }
44
45 spin_unlock_bh(&(BOND_ALB_INFO(bond).rx_hashtbl_lock));
46
47 return 0;
48}
49
50static int bond_debug_rlb_hash_open(struct inode *inode, struct file *file)
51{
52 return single_open(file, bond_debug_rlb_hash_show, inode->i_private);
53}
54
55static const struct file_operations bond_debug_rlb_hash_fops = {
56 .owner = THIS_MODULE,
57 .open = bond_debug_rlb_hash_open,
58 .read = seq_read,
59 .llseek = seq_lseek,
60 .release = single_release,
61};
62
63void bond_debug_register(struct bonding *bond)
64{
65 if (!bonding_debug_root)
66 return;
67
68 bond->debug_dir =
69 debugfs_create_dir(bond->dev->name, bonding_debug_root);
70
71 if (!bond->debug_dir) {
72 pr_warning("%s: Warning: failed to register to debugfs\n",
73 bond->dev->name);
74 return;
75 }
76
77 debugfs_create_file("rlb_hash_table", 0400, bond->debug_dir,
78 bond, &bond_debug_rlb_hash_fops);
79}
80
81void bond_debug_unregister(struct bonding *bond)
82{
83 if (!bonding_debug_root)
84 return;
85
86 debugfs_remove_recursive(bond->debug_dir);
87}
88
89void bond_debug_reregister(struct bonding *bond)
90{
91 struct dentry *d;
92
93 if (!bonding_debug_root)
94 return;
95
96 d = debugfs_rename(bonding_debug_root, bond->debug_dir,
97 bonding_debug_root, bond->dev->name);
98 if (d) {
99 bond->debug_dir = d;
100 } else {
101 pr_warning("%s: Warning: failed to reregister, "
102 "so just unregister old one\n",
103 bond->dev->name);
104 bond_debug_unregister(bond);
105 }
106}
107
108void bond_create_debugfs(void)
109{
110 bonding_debug_root = debugfs_create_dir("bonding", NULL);
111
112 if (!bonding_debug_root) {
113 pr_warning("Warning: Cannot create bonding directory"
114 " in debugfs\n");
115 }
116}
117
118void bond_destroy_debugfs(void)
119{
120 debugfs_remove_recursive(bonding_debug_root);
121 bonding_debug_root = NULL;
122}
123
124
125#else /* !CONFIG_DEBUG_FS */
126
127void bond_debug_register(struct bonding *bond)
128{
129}
130
131void bond_debug_unregister(struct bonding *bond)
132{
133}
134
135void bond_debug_reregister(struct bonding *bond)
136{
137}
138
139void bond_create_debugfs(void)
140{
141}
142
143void bond_destroy_debugfs(void)
144{
145}
146
147#endif /* CONFIG_DEBUG_FS */